Objective To study the effects of norepinephrine (NE) on intracellular reactive oxygen species (ROS) production in cardiac myocytes and receptor pathways involved in ROS production. Methods DCFHDA fluorescent probe was used for the assessment of NE induced intracellular ROS production in cultured cardiac myocytes of the neonatal rats. Myocytes were exposed to NE, NE + prazosin, NE + propranolol, and NE + prazosin + propranolol at different time and doses. The changes of fluorescence intensity in cells were measured by flow cytometry. Results NE increased myocyte ROS production in time and dose dependent manners. NE induced ROS production was partially inhibited by prazosin or propranolol, and completely inhibited by prazosin and propranolol together in myocytes. Conclusion NE can induce intracellular ROS production in cultured cardiac myocytes of the neonatal rats in time and dose dependent manners through the mediation of both ? and ? adrenoceptors.

Objective: To explore the efficacy of esmolol on cardiac ischemia in patients with serious coronary lesions who are not candidates for coronary revascularizations. Methods: Fifty seven aged patients (34 male) with serious coronary artery disease not candidates for coronary revascularizations were included. All patients had classical angina involved in cardiac ischemia, and definitely ischemic ST-segment depressions in surface electrocardiogram, however which were not relieved by routine treatment including intravenous nitrate or even morphine. All patients received loading dose injection and continuously intravenous infusion of Esmolol, and the baseline characteristics before treatment and the effects at 4 hours after infusion of Esmolol were carefully recorded. Results: After infusion of Esmolol, the ischemia-related symptoms of 41 patients completely relieved, and their ST depressions recovered to the baseline accompanied with significant reduction in blood pressure and heart rate (P＜0.0001 all) within (66±23) min. Moreover, nine patients were observed that their ischemia-related symptoms were relieved and ST alteration recovered partially (P＜0.0001 both) at four h after continuous infusion of esmolol. Conclusion: Esmolol is effective to relieve the serious cardiac ischemia-related symptoms and ST-T alteration of ECG in patients with serious coronary lesions.

The imaging findings of pelvic lipomatosis as confirmed by operation and pathology were examined in 1 case and two follow-up asymptomatic cases retrospectively analyzed.The imaging findings included a compressed and deformed bladder with a superior displacement.Its shape was like an inverted tear and pear in coronal view and a banana in sagittal view.Bilateral ureters were both compressed with a medial deviation.And bilateral ureters were dilated with hydronephrosis in 1 case.Rectum and sigmoid were both compressed and became narrowed.The clinical manifestations included frequent urination , urgent urination , urination pain, dysuria, constipation, nausea, vomit and fever in 1 case while another 2 cases stayed asymptomatic.

Objective To compare the effects of stimulated ischemic preconditioning (IP) and ischemia/reperfusion (I/R) on the hyperpolarization-activated current (I_ f ) of sinoatrial node cells and explore the mechanisms of electrophysiological protection of IP. Methods The sinoatrial node cells cultured for 2 d were randomized to three groups: ① Control in which the cells were cultured at 37 ℃ in the mimic reperfusion solution, meanwhile the mixture of 95% O_ 2 and 5% N_ 2 was ventilated; ② I/R in which the cells were cultured in the mimic ischemic solution and simultaneously the mixture of 95% O_ 2 and 5% N_ 2 was ventilated for 3 h, then cultured in the mimic reperfusion solution and simultaneously the mixture of 95% O_ 2 and 5% N_ 2 was ventilated for 4 h; ③ IP in which the cells underwent ischemia for 10 min and reperfusion for 10 min, repeated once. Then the cells were treated as the same as the I/R group. After 4-hour reperfusion, I_ f was recorded by whole-cell patch clamp technology. Results I/R significantly enhanced the current density of I_ f , shifted the current activation curve to more positive value by changing the half-activation voltage from (-98.9?2.4) mV to (-85.2?2.5) mV (P

Objective To study the effects of mimic ischemic preconditioning (IP) on i and I-LCa of sinoatrial node cells and explore the protective effects of IP. Methods Cells were randomized to three groups: control, ischemia/reperfusion (I/R), IP. After labeled with fura4, fluorescence intensity of i was studied with laser confocal microscopy and I-LCa was recorded by whole-cell patch clamp technology. Results IP significantly reduced the fluorescence intensity of i and enhanced the peak of I-LCa as compared with I/R, shifted the I-V curve to more negative value. Conclusion IP can reduce the overload of i caused by I/R and increase I-LCa weakened by I/R.

Recently, it had been demonstrated that some free radical scavengers, reduced glutathion ( GSH ) , Ascorbic acid(AA), the purified aponin Rg1andRb1 of Panax notoginseng, Sodium selenate

Objective To provide reference for establishing diagnosis and differential diagnosis methods of rare yeast-like fungal bloodstream infection for clinical microbiology laboratory.Methods Trichosporon asahii (T.asa-hii)and Geotrichum capitatum (G.capitatum)bloodstream infection was diagnosed and differentially diagnosed through clinical data analysis,morphological examination,biochemical reactions,and molecular biology technology. Results Two types of yeast-like fungal bloodstream infections in case 1 and case 2 both occurred in leukemia agranulocytosis phase after chemotherapy,such infections were serious and highly similar.The cultivated colonies on blood agar plates of case 1 and case 2 were performed gram stain and microscopic examination.Hyphae,arthro-spores and microconidia were visible in the former,thickness of hyphae branches and length of arthrospores were different,most presented rectangular and barrel shape;the latter can be seen hyphae with transparent septum bro-ken up into arthrospores,presented rectangular shape,did not produce blastoconidia.Identification with API 20C AUX showed that they were T.asahii and G.capitatum.The PCR product sequences were compared with NCBI, suggesting that T.asahii and G.capitatum were at sexual stage.Conclusion Comprehensive application of a varie-ty of technical methods is helpful for improving the diagnosis accuracy of bloodstream infection with yeast-like fungi, identifying Trichosporon and Geotrichum to the species level may help physicians to understand such rare fungal in-fection,choose antifungal agents rationally,and improve clinical prognosis.

Objective To investigate the therapeutic effect of modulated medium frequency current therapy (MMFCT) combined with infrared therapy on patients of acute facial neuritis. Methods A total of forty-six patients with acute facial neuritis were divided into two groups (observation group and control group) randomly and medially. Every patient received medication. Meanwhile, observation group received MMFCT and infrared therapy. Before the treatment, and after two and four weeks of treatment, Portmann scale were used to evaluate the autonomic movements of the facial expression muscles on both sides. After 4 weeks of treatment, the outcome was evaluated by House-Brackmann facial nerve grading system. Results There were no significant differences in Portmann scales before treatment between two groups. Portmann scales were higher in observation group than those of control group after two and four weeks of treatment (P<0.05). With the duration of treatment, Portmann scales were increased successively in two groups. The significant difference was found in multiple comparisons between groups. After 4 weeks of treatment, the efficacy was significant in the observation group, compared with control group, the difference was significant (P<0.05). Conclusion Modulated medium frequency current therapy combined with infrared therapy have a better effect than isolated medication.

Objective To observe the effect of the 8-word bandage on the walking ability of stroke patients with knee hyperextension. Methods Fifty patients with stroke combined with knee hyperextension were randomly divided into the observation group and the control group with 25 cases in each group. The control group was treated with conventional methods, including Bobath technology, Brunnstrom therapy and motor relearning primarily rehabilitation training. In addition to the conventional methods, patients in the observation group used 8-word bandage to fix knee joint in walking training. Before and after 8 weeks of treatment, Holden walking function classification, 10-meter maximum walking speed and improved Barthel index were adopted to evaluate the walking ability, maximum walking speed and the life ability of the patients. Results There were no significant differences in the scores before treatment between the two groups. The Holden walking function classification, the 10-meter maximum walking speed and the Barthel index scores were significantly improved after 8-week treatment in both two groups (P<0.05), and patient conditions were more significantly improved in the observation group than those of the control group (P<0.05). Conclusion Using 8-word bandage to fix knee joint can significantly improve knee hyperextension in patients with stroke, so as to improve the walking ability and activities of daily living.

Objective To investigate the relationship between the level of serum uric acid(SUA) and carotid atherosclerosis in male patients with type 2 diabetes mellitus(T2DM). Methods A collection of 579 male T2DM patients with or without carotid atherosclerosis were grouped based on quartiles of SUA. Age, SUA, smokers, duration, body mass index(BMI), blood pressure, total cholesterol(TC), triglyceride(TG), high-density lipoprotein cholesterol(HDL-C), low-density lipoprotein cholesterol(LDL-C), blood urea nitrogen(BUN), creatinine(Cr), and HbA1C were determined in all subjects. The plaques in carotid arteries and intima-media thickness(IMT) were measured with high-resolution ultrasound. Results BMI, systolic and diastolic blood pressures, TG, and Cr showed a gradual increase, while HDL-C and HbA1C showed a gradual decrease according to the higher SUA quartiles in male T2DM(P＜0.05). Nevertheless, the detectable rates of smokers, duration, age, TC, LDL-C, and BUN had no relationships with the SUA quartiles(P＞0.05). The detectable rate of carotid atherosclerosis and the thickness of carotid plaque were positively associated with the levels of SUA in male patients with T2DM(P＜0.05). However, intima-media thickness of carotid arteries did not illustrate the correlation with the levels of SUA in male T2DM patients(P＞0.05). Age, HbA1C, and SUA were independent factors of carotid atherosclerosis in these patients by logistic regression(P＜0.05). Conclusion The levels of SUA seems to be associated with the occurrence and development of carotid atherosclerosis in male patients with T2DM.